High-frequency machine



March 17, 19252. 1,530,376

. 1 G. KRAWINKEL HIGH FREQUENCY MACHINE Filed Aug. 15, 1921 5 Sheets-Sheet l March 17, 19,25. 1,530,316

G. KRAWINKEL P IIGI- FREQUENCY MACHINE Filed Aug. l5, 1921 3 Sheets-Sheet 2 March 17, 1925.

1,530,376 G. KRAwvlNKEL HIGH FREQUENCY MACHINE v Fned Aug. ;5. 1921 s sheets-sheet s Patented Mar. 17, 1925.

GNTHER KRAWINKEL, OF GUMMERSBACH, GERMANY.

HIGH-FREQUENCY MACHINE.

Application led August 15, 1921. Serial No. 492,512.

To @ZZ wh om t may concern:

Be it known that I, GNTHER KRAwIN- Knr., a citizen of the German Republic, residing at Gummersbach, Germany, have invented certain new and useful Improvements in High-Frequency Machines (for which I have filed application in Germany, March 23, 1920, Patent No. 357,228, granted May 22, 1922; England, May 30, 1921; France, March 21, 1921), of which the following is a specification.

The object of the present invention is to provide an electric generator capable of producing an alternating current of very high frequency and high E. M. F., with a comparatively low speed of opera-tion. For carrying out this object I provide a machine comprising two disks standing with their plane parallel surfaces the one opposite the other and each carrying a number of coil crowns in radial arrange-ment. One of said disks carries an exciting winding for continuous current which produces an alternating current in the opposite winding of the adjacent disk by the revolving motion communicated to this disk or by the movements of both disks in opposite directions. This alternating current passes through the leads into the next following radial coil crown and excites by induction an alternating current of increased frequency in the coil crown of the first disk which follows next in radial direction, said first disk carrying also the exciting winding for continuous current. The alternating current of higher frequency thus produced is conducted by leads into the following coil crown upon this disk and excites in the opposite coil crown of the other disk an alternating current of again increased frequency which is conducted into the next following coil crown of this second disk to produce an exciting action in the corresponding opposite coil crown of the first disk and so forth. In each coil crown two adjacent coils are wound in opposite directions. If the one coil is lwound clockwise the adjacent coil is wound counter-clockwise.

The excitation of alternate coil crowns carried by the two parallel disks may be aptly compared to the reflection of the image of an object between two parallel mirrors. As the image of an object between two parallel mirrors is reflected from one niirrorto the other, so the excitation of the outer coil crown is reflected through the induced and inducing coils from one disk.

cross section so that these windings can take up currents of comparatively high intensity. The space at disposal diminishes from the circumference of the disks towards the center. As the intensity of current decreases however with the increase of frequency the construction adapts itself naturally to these conditions. The cross section of the wires can therefore be adapted to the different intensities of current by the varying sizes of the coils, the number of turns remaining always the same. As however the exciting current can be chosen very great, sufficient space for the thick wire turns being at disposal in the outer crown, the intensity of the current taken oft' from the last of the excited crowns will be considerably higher than with axial succession of the reflecting steps.

In comparison with the radial arrangement in one plane the advantage-is obtained that the rotor and the stator in the arrangement laccording to this invention have more turns for the same number of poles, number of revolutions, dimensions and size of wire of the coils. This means that the electromotive force isv greater than with the uniplane arrangement. Owing to the utilization of two parallel planes having each the radial arrangement of the coils an increased watt efficiency is obtained.

In order that the invention may be clearly understood I shall Vproceed to describe the same with reference to the accompanying drawing, whereim- Figs. 1 and 2 illustrate diagrammatically the two disks a and Z) which are supposed to revolve at equal angular speed in opposite directions.

Fig. 3 shows, partly in longitudinal section and partly in side elevation, a form of execution of the invention according to the diagram Fig. 1.

Fig. 3 is a diagrammatic view illustrating the windings on the two disks and connections between the same.

Fig. 4c shows 1n which manner several of r-incilceased frequency in 'the inner cron-'n 'r2 of Vdisk a.

Fig. 2 shows four crowns upon Aeach 'disk b. nThe alternating currentfroni 'crown 'r2 of disk o, produced in the lfiereinbefore eiiplained manner, flows over into the third crown r3 of disk L in order to vproduce an alternating' current o'f again increased frequencyfin the third crown R3 'of disk Z5. This alternating current flows frein crown -Rainto the fourth crown R4 of disk Y) and produces in the opposite crown if? kof disk-a an alternating current of 'double frequency. This can lbe continued -with continuous "1`ncrease ofthe frequency. he diagraniniatical illustration shows that the spaces for the coils get narrower frein Athe circumference to 'the center, As the intensity of current is however .reduced also in the sa.1i`1e direction the construction adpts itself "Very well to the electric 'couditi-on-s.

It is not .necessary that the 'current be taken freni 'the inner coil crown with the highest I'feqn'encfy 'but current can be taken also from .the intermediate crowns so 'that seriousness. ien-gustan be precise-ea simi. taneously .fh one and "the 'saine inachine.

iskro withthe "crowns 7*'2 'fand r2 'is keyed upon 'the snai-1g. nujjufnnied im the stanonus 'and t2?. 'The fletes -jwineh connect the collector rings 17:1 fand g? for the 'conf tinuous currentjwith 'the jc'oils "of crown "f2 are conducted *through tli'e boring @o2 of shaft co1'. Thel'eafdsjwhich connect the coils of, Aciown r2 with the Lcollector rines 7L", 7g2 ifortlre altern-ating current are conducted through the saine boring to? of shaft it. The :belt 'pulleu l re'olijes tlre shaft w1 "i'n the directionjof ario\.1 '.'7`j1.

A'lshfift i113 fwft'i belt lpulley 2 is journsna-in the standards f2 ses m angriinent Twith 'shaft'io This'. shaft "w3 is re- Volved in the direction of arioii' gpg, 'The disk 'b witlhthe coil crowns l-1 and R2, connecte'd one 'with AVtire other by the lead n is keyed 'upon' thisshaft no3.

Figa shows `the direction 'offwind'in of .sie cons, sin :it YWin te LI@emma um adj cent 'coils of tlre"'sa1`ne crown are wound inoppo'site directions, producing' alternating poles., .The upper View 'shows 'condu fors "g, "aridgf-2 'which are connected to rings y1 fand g2 `-of Fig. 3, for supplying continuous current, nd .shows conductors it, forconnection 'torin'gs il and 71.2.

The lower -viewillustiates how the coils of theopposite disk may be interconnected.

n'order to prevent effects of inductance betweenith'e crownsofthesanie disk a ring O1 0f soft iron is arranged between the 'crowns T2 vand r2 and a similar ring O2 between the crowns R1 and R2, these rings shun'ti'ng "the 'lines produced by the coils of one crown from the coils of the adjacent crown and thus preventing any substantial inductive act-ion between `coii's'on the saine disk.

Fig. esile-ssen arrangement. fior strengtn ening' the 'iinal current which lhas been weakened bly the @increase -of frequency. Disks l, and' T'f'are keyed ujpona continuous Vshaft AL Upon gliollo'w `shafts B and reffolvirig- V inoppositejdirections around said shaft A the-disk ofthe-'hist machine, Avthe disks 3 and 5 of the second ltw-in machine and the disk f6 of tlre "third machine are keyed. A11 [disks revolve at exactiy the saine speed. 1The#currents A'produced by the individual machines are equal and' can vbe Combined ny parallel connection to 'one thai current.

'1. A high frequency machine vcomprising' ing "said "disks opposite directions, a plurality of circular sets'o'f 'cores secured to each diskja'nd projecting at rightangles to the plane tli'ei'eoiffand 'concentric to the coinnion :axisof rotation of 'said vdisks, the nuniber fof cores inthe several "sets being equal and tite-corresponding sets-'Of the two disks 'being yanange'd 'in oppose-@1 relation and :t-fthe saine'radial vdistance "from the of rotation, winding on Veach core, the "wii lings of each 'set being connected together, `means'for Vsupplying continuous eurrei'it to the outer, for" first, set "of l`windings on 'one "disk, connections 'between the outer, or iirst, set "of windings on th'e other disk and "the second set 'of windings thereof, connections between the'second set of vwindings of 'the'fiiist 'disk and Athe third 's'etfof windings thereof, and so on, the' outer Pinduced and vthe Vadjacent linner inducing windings on 2the 'fsaine idisk y'heini-' connected, and ine ans for'collecting' the alternating cui"A rent"induced in the innermost set of windin'gs of xthe nist disk.

A high frequency niachine comprising two opposed parallel disks, means for 'rotating` one'ofsaid disks, a Pliiality of cirnl'lar sets "of lcores on each disk, vthe'niunber of cores in the several sets being equal and Athe corresponding' sets 'on the two disks being arranged in opposed relation and at the saine radial distance from tthe. coifnnion axis of 'rotation 'of the "disks, a winding 'on each core a`i1tl, 'tl1`e"windings df lthe s'anie set being .connected together, ineens for supplying continuonscurentito the louter, ordir'st, set

of windings on one disk, connections between the outer, or first, set of windings on the other disk and the second set of windings thereof, connections between the second set. of windings on the firstk disk and the third set of windings thereof, and so on, the outer induced and the adjacent inner inducing windings on the same disk .eing connected, and means for collecting the alternating current induced in the innermost set of windings of the first disk.

3. A high frequency machine comprising two opposed parallel disks, means for rotating one of said disks, a plurality of circular sets of' cores on each disk, the number of cores in the several sets being equal and the corresponding sets on the two disks being arranged in opposed relation and at the same distance from the common axis of rotation of the disks, a winding on each core and the windings of the same set being connected together, means for supplying continuous current to the outer, or first, set of windings on one disk, connections between the outer, or first, set of windings on the other disk and the second set of windings thereof, connections between the second set of windings on the first disk and the third set of windings thereof, and so on, the outer induced and the adjacent inner inducing' windings on the same disk being connected, and means for collecting alternating currents from one or more of said induced windings.

4. A high frequency7 machine, comprising iwo opposed parallel disks, means for rotating said disks in opposite directions, a plurality of circular sets of cores on each disk, the number of cores in the several sets heilig equal and the corresponding sets of the two disks being arranged in opposed relation and at the same distance from the common axis of rotation of the disks, a winding on each core, the windings on each set being connected together, means for supplying continuous current to a set of windings on one disk, whereby an alternating i. M. F. is induced in the opposed windings on the other disk, said induced windings being connected to an adjacent set of windings on the same disk, whereby these last mentioned windings induce alternating E. M. F. of higher frequency in the opposed windings on the first disk, and so on, the induced and adjacent inducing windings on same disk being connected, and means for collecting alternating current from one or more sets of induced windings.

A high frequency machine, comprising two opposed parallel disks, means for rotating said disks in opposite directions, a plurality of circular sets of cores on each disk, the corresponding sets on the two disks being arranged in opposed relation and at the same distance from the .common axis of rotation, a winding on each core, the windings of each set being connected together, means for supplying continuous current to a set of windings on one disk, whereby alternating E. M. F. is induced in the opposed windings of the other disk, said induced windings being connected te an adjacent set of windings on the saine disk, whereby these last mentioned windings induce alternating E. M. F. of higher frequency in the opposed windings of the first disk, and so on, the induced and adjacent inducing windings of the same disk being connected, and means for collecting alternating current from one or more sets of induced windings.

G. A. high frequency machine comprising a shaft, a support fixed to said shaft, a plurality of circular concentric sets of cores xed on said support, a winding on each core, the windings of each set being connected together, aI second shaft coaxial with said first shaft, a support fixed to said second shaft carrying a plurality of circular concentric sets of cores each of which is provided with a winding and the windings of each set being' connected together, corresponding sets of windings on the two supports being arranged in inductive relation, means for supplying continuous current to a set of windings on one of said supports, whereby an alternating E. M. F. is induced in the corresponding set of windings on the other support, said induced windings being connected to an adjacent setl of windings on the same support, whereby these last nieniioned windings induce alternating E. M. F. of higher frequency in the corresponding windings of the first support. and so on, the induced and adjacent inducing windings of the same support being connected, means for rotating said shafts in opposite directions, and means for collecting alternating current from one or more sets of induced windings-- 7. A high frequency machine comprising two opposed parallel disks, means for rotating said disks in opposite directions, at least two circular concentric sets of cores on each disk, the corresponding sets on the two disks being arranged in opposed relation and at the same distance from the common axis of ictation, a winding on each core, the windings of each set being connected together, means for supplying continuous current to a set of windings on one disk, whereby alternating E. M. F. is induced in the opposed winding of the other disk, said induced windings being connected to the adjacent set of windings on the same disk, whereby these last mentioned windings induce alternating E. M. F. of higher frequency in the opposed windings of the first disk, and means for collecting the induced alternating current.

8. A high frequency machine comprising a plurality of circular concentric sets of cores each provided with a winding and the windingsot each set being connected to.,- gether, a; plurality of circula-r concentric sets of cores arranged in opposed relation tosaid first mentioned sets each provided with a winding and the windings of each set being,- connectech together, means for rotating one ot sa-idplurality ofY sets with respect to the othei, means for supplying continuous cur-` rent to one set of windings` whereby alternating-E. M, F. is` inducedl in the opposed set ot windings, said induced windings. being connected to. any adj acent set of windings, whereby these. last mentioned. windings indnce alternating E, M. F. of higher :Ere quency in the windings opposed thereto,` and soy on, eachv set o induced windings beingconne-@ted` to the tenace-ntv set of inducingy windings, whereby mirror-.excitation of thel lwindings is produced with progressive inf crease in. the frequency of the induced alternati-ng E. M. EW and: means for` collecting; alternating current froml one or moresets of induced windings.

In. testimony whereof affix iny signature in presenceoii two witnesses.`

v GNTHER KRAWlNKEL,

lll-Vitnesses-zf GOTTLEIB- Tnnrsnm,

RUDOLPH SLADY. 

